The Chilean international won the Copa America with his home country this summer and was given an extra time off following the tournament in Chile. Alexis Sanchez will very likely miss Arsenal's Premier League Opener against West Ham this weekend. All pictures via Arsenal.com.

Alexis Sanchez Trains in Nike Mercurial Superfly K-Leather Boots

Close-up picture of Alexis Sanchez's 2015-2016 Boots.

The new Alexis Sanchez 2015-2016 Football Boots are the first-ever leather version of the Nike Mercurial Superfly Football Boots, set to be officially launched in the coming days. Alexis Sanchez laced up in a non-modified version of the Nike Mercurial Superfly Leather Boot.

Featuring the same technologies as the synthetic version of the revolutionary Nike Mercurial Superfly Boots, the leather edition of the Nike Mercurial Superfly Boot features an extra layer of premium Kangaroo leather in the touch area for ultimate control. The leather layer is stitched on the upper of the Nike Mercurial Superfly Lightning Storm Pack Cleats, creating a striking half-and-half design.

Part of the first-ever Nike 2015-2016 Leather Boots Collection, the Nike Mercurial Superfly K-Leather Boots feature contrasting black laces and a black carbon-fibre sole plate. The Nike Mercurial Superfly 2015-2016 Leather Boot is the most advanced leather boot ever, and the most expensive regular Nike Football Boot to date.

It will be very interesting to see which other Nike athletes will switch to the Nike Kangaroo Leather Pack in the coming weeks. We'll keep you updated as soon as their are any other players lacing up in Nike's brand-new leather boots.

Bold. What do you think of the on-pitch impression of the Nike Mercurial Superfly K-Leather Boots, and which players do you think will switch to the Nike 2015-2016 Leather Boots Pack? Let us know in the comments below.